1. Business overview

Inogen, Inc., or the Company, is a medical technology company focused on the development, manufacture, and commercialization of respiratory products, including portable and stationary oxygen concentrators, airway clearance devices, and continuous positive airway pressure, or CPAP, masks for the treatment of chronic respiratory conditions. The Company's portfolio includes portable oxygen concentrator systems designed to optimize output, weight, sound levels, and battery life, as well as stationary oxygen concentrators, the Simeox airway clearance system, and Aurora CPAP masks. Following the sale of its United States oxygen rental business on November 2, 2026 (see Note 3), the Company no longer provides oxygen rental services. The Company maintains a broad network of patients, prescribers, providers, and distribution partners.

The Company generates the majority of its revenue from the sale of portable oxygen concentrator systems and related accessories to patients, home healthcare providers, resellers, and distributors. The Company's products are marketed in the United States through direct-to-consumer and prescriber, as well as through business-to-business partnerships, and internationally through distributors and medical equipment providers. The Company's product offerings include multiple configurations of its Inogen One, Rove, At Home, and Voxi systems, in addition to Simeox and Aurora products and related accessories.